tofsee | 4dccb7f03afbc348faecb8eaa98ab867c56b4a84717cd510b83d0621bd7ce5ed

General

Target

2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe
Size

13.6MB
MD5

f2f54f1fbf2d00a57957de118abe5b58
SHA1

7a6c75b8e426032f0dff6cb6137797e006eeef9f
SHA256

4dccb7f03afbc348faecb8eaa98ab867c56b4a84717cd510b83d0621bd7ce5ed
SHA512

955e1150aaff7c30658b7e3009071726ed51f07d4f744ff48890890bbef412c9c1057edec09290c39c8b3a1f34b9906a6d2eb6d7d37ac8fd89542df2df8cfc90
SSDEEP

24576:XEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZt:0fot

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1856	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wbetszvm\ImagePath = "C:\\Windows\\SysWOW64\\wbetszvm\\nmacqnog.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe

Deletes itself 1 IoCs

pid	Process
2084	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	nmacqnog.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1988 set thread context of 2084	1988	nmacqnog.exe	108

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2004	sc.exe
3608	sc.exe
4856	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2052	3484	WerFault.exe	82
2676	1988	WerFault.exe	99

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nmacqnog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 3904	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	84
PID 3484 wrote to memory of 3904	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	84
PID 3484 wrote to memory of 3904	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	84
PID 3484 wrote to memory of 4532	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	86
PID 3484 wrote to memory of 4532	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	86
PID 3484 wrote to memory of 4532	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	86
PID 3484 wrote to memory of 2004	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	90
PID 3484 wrote to memory of 2004	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	90
PID 3484 wrote to memory of 2004	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	90
PID 3484 wrote to memory of 3608	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	94
PID 3484 wrote to memory of 3608	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	94
PID 3484 wrote to memory of 3608	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	94
PID 3484 wrote to memory of 4856	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	97
PID 3484 wrote to memory of 4856	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	97
PID 3484 wrote to memory of 4856	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	97
PID 3484 wrote to memory of 1856	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	100
PID 3484 wrote to memory of 1856	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	100
PID 3484 wrote to memory of 1856	3484	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	100
PID 1988 wrote to memory of 2084	1988	nmacqnog.exe	108
PID 1988 wrote to memory of 2084	1988	nmacqnog.exe	108
PID 1988 wrote to memory of 2084	1988	nmacqnog.exe	108
PID 1988 wrote to memory of 2084	1988	nmacqnog.exe	108
PID 1988 wrote to memory of 2084	1988	nmacqnog.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wbetszvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nmacqnog.exe" C:\Windows\SysWOW64\wbetszvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wbetszvm binPath= "C:\Windows\SysWOW64\wbetszvm\nmacqnog.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wbetszvm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wbetszvm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:1856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3484 -s 1036
  2⤵
  - Program crash
  PID:2052

C:\Windows\SysWOW64\wbetszvm\nmacqnog.exe
C:\Windows\SysWOW64\wbetszvm\nmacqnog.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1988 -s 516
  2⤵
  - Program crash
  PID:2676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3484 -ip 3484
1⤵
PID:1284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1988 -ip 1988
1⤵
PID:3512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nmacqnog.exe

Filesize
13.4MB

MD5
95aa373ba11fa8e73b0433b4fcf0ccf6

SHA1
6f08ee73e9eb107508fffe4939a9f534ae2df01f

SHA256
fe42246a36b5e2f066612f1b2eaeff2ab7b98ca3b45be285086e2615a1d67c4e

SHA512
821d5cd2177c910d6ca8a46856263cb5b1412be289cde8436357b471e317e2c6eed41ff4f2b53367223bbd9ec605955e211c79b475cd577f28a278d31e6c55bb

Download Submit
memory/1988-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1988-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1988-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1988-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2084-14-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2084-16-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2084-17-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/3484-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3484-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/3484-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3484-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3484-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3484-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads